2 23 watts would be a little high, right? I have 2 18 watts and I've started to get some algae, but I also just dose flourish excel, and not co2. So, it just depends on what you want out of your tank. But cfl is a cheap option I think

2 23 watts would be a little high, right? I have 2 18 watts and I've started to get some algae, but I also just dose flourish excel, and not co2. So, it just depends on what you want out of your tank. But cfl is a cheap option I think

Hi, you maybe right because I had filamentous algae in the past, but the bulbs can be put higher if this is the case. 18W bulbs are not disponible where I am, it's 13 watts, than 23 watts.

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